How to properly construct bumpers?

[TheHolyHades1]

Hey.

After this past competition we noticed that the noodles inside our bumpers were able to be moved/wiggled around inside the fabric. We had used some masking/electrical tape to attach the noodles to the plywood, which was then covered in the bumper fabric. While the bumpers were still perfectly functional at the end of the competition, I'm curious as to how other teams have made their bumpers more robust.

My best guess would be loads of duct tape?

Thanks,
Hades